<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    
<div id="app">
    <h2>
        {{fullName}}
    </h2>
</div>

<script src="../js/vue.js"></script>
<script>
    const app = new Vue({
        el: '#app',
        data: {
            message: 'Hello Vue!',
            firstName: 'Kobe',
            lastName: 'Bryant'
        },
        computed: {
            // 简单写法，一般计算属性只有get，没有set，是一个可读属性
            // fullName: function(){
            //     return this.firstName + ' ' + this.lastName;
            // }

            //计算属性完整写法
            fullName: {
                get: function(){
                    return this.firstName + ' ' + this.lastName;
                },
                set: function(fullName){
                    const name = fullName.split(' ');
                    this.firstName = name[0];
                    this.lastName = name[1];
                }
            }
        }
    })
</script>
</body>
</html>